Breeding for bacterial wilt resistance in tomato

Date

6-1956

Degree

Bachelor of Science in Agriculture

Major Course

Major in Agronomy

College

College of Agriculture and Food Science (CAFS)

Adviser/Committee Chair

Thomas L. York

Abstract

Crosses between two native varieties and four foreign varieties were made in the greenhouse, using foreign varieties as the female parents. The hybrids together with the parents were tested in a disease-ridden field. Disease readings revealed 30 to 50 percent losses in the susceptible-parent lines considerable resistance in the hybrids, and outstanding resistance in the native parents. to distinguish accurately the various degrees of resistance, a follow-up experimental was launched involving back crosses to the Philippine lines which were artificially inoculated with diluted bacterial oozes. This test confirmed the findings of the field test which can form the basis of a hypothesis; The native varieties show definitely higher resistance than the foreign varieties and that resistance of a progeny is clearly intermediate between that of parents, suggesting a non-dominant or partially dominant poly factorial genetic basis of resistance.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

This document is currently not available here.

Share

COinS